Tire casing remover



patented ct. 11, 1932 HOMEB A. CHERRY, OF MONTEBELLO, `AILIFOIRNIA.

man Gesine nniuovnn Application led February 1, 1932. Serial No. 590,060.

This invention relates to a device for removing tire casings from molds. lt'is well known to those familiar with the art of tire manufacture, that after curing of the tire in 115 sectional molds and separation of the upper mold section from the lower section, the tire casing sticks to the lower section. 1t is necessary to pry the tire loose from the lower mold section. It is the practice in tire manufacture to provide a continuously moving conveyor for the sectional molds containing the vulcanized tires. The molds are broken during their travel on the conveyor and the upper sections separated from the lower sections and the tires. Men are positioned along the conveyor to pry the tires loose from the lower sections by crow bars and like tools. This is an unsatisfactory method requiring labor on the part of several men. After re- B@ moval of the cured casing, a green casing is inserted in the lower section and the top section replaced. By the use of such methods it may happen that the casing is not removed until the mold has reached a point in its travel inconvenient for insertion of a green tire. Other disadvantages will be apparent to those skilled in the art.

The present invention has for its primary object the provision of a power actuated mechanism for removing the tire casing. `.Another object of the invention is to provide details of construction whereby the device is adaptable for expeditious Operation, is selectively controllable and may follow the conveyor in its travel.

rIhese objects together with other objects and corresponding accomplishments are obtained by the embodiment of my invention illustrated in the accompanying drawing, in which Fig. 1 is a perspective view partly` in section showing the associated parts of thel device; Fig. 2 is a section on an enlarged scale as seen on the line 2-2 `of Fig. 1; and Fig. 3 is a section as seen on the line 3*-8 of Fig. 2. i

Referring more particularly to the drawing, 5 indicates the base of a conveyor having a travelling platform 6. Attached to 50 the base 5 at the sides of the platform are angle bars having horizontal legs 7a directed inwardly Iover the platform so as to form overlianging ledges. Theseledges are adapted for abutment by lower sections of tire molds. rlhere is shown onthe platform the lower section 8 of a tire mold. A tire casing 9 has been vulcanized in the mold and the top section of the mold removed. lfhis top section is not shown in the Vdrawing. the molds and to remove the top sections for use in conjunction with the lower sections when the green tires are inserted therein. The tire casings stick to the molds due to partial vacuum and other well known causes. Considerable force is required to remove a casing from the mold.

ln order to remove the casing, l have provided a tire engager consisting of a handle 1() having at the end thereof an arcuate channel 11 forming a hook which may be engaged with the bead `of the tire casing. Extending laterally from the; hook 11 is a connector bar 12 having an eye 13. Y

Extending parallel to the path of travel of the conveyor is a shaft 14 upon which an idler pulley 15 is mounted so that it may slide along the shaft as well as rotate. A'cable 16 is attached at yone end to connector 12 and at its other end tothe piston rod 17 operating in an air cylinder 18. Any flexible line, such as a chain may be substituted for the cable. rEhe air cylinder'is double acting and is shown mounted upon a .carriage 19 riding upon a rail 2 0 extending parallel to the conveyo-r. l

rlhe ends of the air cylinder are connected by pipes 21 to a valve'22 for selectively supplying air under pressure to one end of the cylinder and connecting the other to 'an' eX- haust. rlhe valve 22 'may be of any conventional type and vis herein sho-wn as of the rotary type having a segmental gear V23 meshing with a rack 24E. A spring tends to hold the valve in position sothat air will be supplied to cylinder 18 causing the piston rod to be projected with the cable 16 in its lower position. The rack 24 is connected to the plunger of av single acting air vmotor 25. A spring 26 urges the plunger to inner po- It is a common practice to break apart sition. A hose or flexible tube 27 is connected to the motor 25 for supplyingair thereto so as to project the rack and operate the valve 22 to cause the cable 16 to be raised. The hose 27 is connected to the handle l0 of the engager and a button operated valve 28 on the handle Vcontrols the supply of air under pressure from hose 29 to hose 27. The arrangement may be such that upon depression of the button 28 air underpresf.

sure is supplied to the motor 25. 'Vi/hen re'- leased the hose 27 is connected tothe at# mosphere. This is a conventional type of button not shown or described. The air intake hose 29 is connected to the main air line 30 which also supplies air to the valve 22;

In the operation of the device, a man grasps the handleY of the engager and places the hook 11 under they upper bead ofv the tire-casing 9, at the same time disposing the tire'moldsection 8 under the ledge of bar 7. Thereupon, lhe depresses the controlbutton 28- causing air'to be admitted to cylinder 18 and the piston rod 17 to be retracted. This elevates the cable 16 and by reason of the engagement of the hook with the tire casing, the latter is pulled from the mold. Obviously the operator maintains the hook in engagement with the casing landthe air cyl- .'inder and cable may followfthe mold as it 'said line vand thereby moving said tire er1-- moves with the conveyor.

What I claim is 1. A device for separating a tire from a tire mold section comprising a hand manipulatedtire engager having a handle, a channel hook at one end of the handle extending transversely thereof for engagement with the bead of a tire; a line securedy to .said engager and extending laterally therefrom, power y.actuated means to wliicli-saidline is attached l for-selectively moving said line and thereby moving said tire engager laterally; and a manually operable controlk forsaid power actuated means, saidV control being located on said handle.- V

2. A device for separating a tire from a tire mold section comprising a hand manipulated tire engager having a handle', a channel hook at one end of the handle extending transversely thereof for engagement with the bead of a tire, a connector extending laterally of said hook and handle; a line secured to said connector, power actuated means to which said line is attached for selectively moving gagerlaterally; and a manually operable control for said power actuated means, said control being located on said handle.

3. The combination with a conveyor structure having an overhanging ledge adapt-ed to be abutted by anA edge of a lower tire mold section; a. device for separatingatire from aV tire moldsection comprising a hand manipulated tire engager having a handle, ai hook V,lated tire engager having Ioperated valve fand thel 'detailsk are,

f cured to said connector,

at one end of the handle for engagement with` the bead of a tire; a line secured to said engager, power actuated means for selectively moving said line and thereby moving said tire engager laterally; and a manually operable control for said power actuated means.

4. The combination with a. conveyor structure havingan overhanging ledge adapted to bek abuted by an edge yof a lower tire mold section; adevice vfor separating a tire from a tire moldsection comprising a hand manipua handle, a hook at one end of the handle for engagement with the bead ofa tire; Aaline secured to said engager, power actuated means for selectively `moving-said line and thereby moving said tire engager lateral-ly and a manually operable cont-rolfor said power actuated means, said control being located on said handle.

5. The combination with a conveyor struc- Vture having an overlianging ledge adapted to be abutted byran edge of a lower tire-mold section; a device for separating a tire from a tire moldV section comprising a hand ma'- nipulated tire engager havingI a handle, a 'channel nook at one end of the handle extending transversely thereof for engagement with the beadof a tire, a connector extendinglaterally of said hook. and handle; a line seoperable therein by Huid under pressure, said line being attached to said piston for selectively moving saidline and thereby moving saidr tire engager laterally; and a manually operable-control for iiuidsupplied tosaid-V moving said line and thereby moving said tire:-

engager laterally; and a manually operable control for iiuid supplied to'said cylinder,

said controlbein'g located'on said'handle'. Y

7. The combination with a conveyor structure `having an overhanging ledge adaptedI to be abutted by an-edge of a lower tire' mold section; adevice for separating a tire from a tire mold'section comprising a hand-manipulated tire engager having a handle, a hook at vone end of the handle for engagement with the bead of a tire; a line secured to said engager, power actuated means for selectively moving said lineand thereby moving said Vtire engager laterally5la manually operable -control for said power actuated means; and* a cylinder and piston "lso a travelling carriage` for" supporting saidpower actuated means and cable whereby thef latter may follow said conveyor. f

8. The combination with a conveyor struc-jil ture having an overhanging ledge adaptedik to be abutted by an edge of a -lower tire1 mold section; a device for separating a tire from a tire mold section comprising a bandi manipulated tire engager having a handle, a hookrat one end of the handle for engages; ment with the bead of a tire; a line securedl to said engager, power actuated means for' selectively moving said line and thereby movl' ing said tire engager laterally; a manually operable control for said power actuated means, said control being located on said handle; and a travelling carriage for supporting said power actuated means and cable whereby the latter may follow said conveyor.

9. The combination with a conveyor structure having an overhanging ledge adapted to be abutted by an edge of a lower tire mold section; a device for separating a tire from a tire mold section Comprising a hand manipulated tire engager having a handle, a channel hook at one end of the handle eX- tending transversely thereof for engagement l with the bead of a tire, a connector extending laterally of said hook and handle; a line secured to said connector, a cylinder andpiston operable therein by iluid under pressure, said line being attached to said piston for selectively moving said line and thereby moving said tire engager laterally; a manually operable control for fluid supplied to said cylinder; and a travelling carriage for supporting said cylinder and line whereby the latter may follow said conveyor.

10. The combination with a conveyor structure having an overhanging ledge adapted to be abutted by an edge of a lower tire mold section; a device for separating a tire from a tire mold section comprising a hand manipulated tire engager having a handle, a channel hook at one end of the handle extending transversely thereof for engagement with the bead of a tire, a connector extending laterally of said hook and handle; a line secured to said connector, a cylinder and piston operable therein by Huid under pressure, said line being attached to said piston for selectively moving said line and thereby moving said tire engager laterally; a manually operable control for iluid supplied to said cylinder, said control being located on said handle; and a travelling carriage for supporting said cylinder and line whereby the latter may follow said conveyor.

In witness that I claim the foregoing I have hereunto subscribed my name this 25 day of January, 1932.

HOMER A. CHERRY. 

